A Small Flock of Birds Becomes Stranded on an Isolated

question 13

Multiple Choice

A small flock of birds becomes stranded on an isolated island during a hurricane.The birds successfully breed and spread across the island.Several decades later,a hurricane hits the island and randomly kills off most of the birds,including the only birds in the population that had black tails.Which one of the following processes is best illustrated in this example?

• A)Gene flow
• B)Speciation
• C)Natural selection
• D)Genetic drift